求上传音乐到服务器和下载的代码

Question

新手编程，写个音乐网站，知道ftp服务器的地址、上传用户和密码，希望通过上传MP3到ftp服务器获得MP3歌曲链接，并通过链接来播放和下载音乐，但不知道怎么获得链接，一直无从下手，求高手支援，或者传授更好好的播放和下载MP3的方法

Answer 1

fileUpload 不行吗  你可以先判断下后缀是不是.mp3文件

Answer 2

private File upload;// 封装上传文件
private String uploadFileName;// 设置上传文件的文件名
private String uploadContentType;// 上传文件的类型
public File getUpload() {
            return upload;
}public void setUpload(File upload) {
        this.upload = upload;
}public String getUploadFileName() {
        return uploadFileName;
}public void setUploadFileName(String uploadFileName) {
        this.uploadFileName = uploadFileName;
}public String getUploadContentType() {
        return uploadContentType;
}public void setUploadContentType(String uploadContentType) {
        this.uploadContentType = uploadContentType;
}
/**
         * xml文件上传
         *
         * @return
         * @throws Exception
         */
        public String xmlUpload() {
                if (this.getUpload() == null) {
                        this.addActionError("不允许上传空文件，请您重新上传!");
                        return "Error";
                }
                FileOutputStream fos = null;
                String basePathfile = 你要上传的文件路径 + getUploadFileName();
                try {
                        fos = new FileOutputStream(basePathfile);
                } catch (FileNotFoundException e) {
                        e.printStackTrace();
                }
                FileInputStream fis = null;
                try {
                        fis = new FileInputStream(getUpload());
                } catch (FileNotFoundException e) {
                        e.printStackTrace();
                }
                byte[] buffer = new byte[1024];
                int len = 0;
                try {
                        while ((len = fis.read(buffer)) > 0) {
                                fos.write(buffer, 0, len);
                        }
                } catch (IOException e) {
                        e.printStackTrace();
                }
                try {
                        fos.flush();
                        fos.close();
                        fis.close();
                } catch (IOException e) {
                        e.printStackTrace();
                }
                System.out.println("导入完成");
                return SUCCESS;
        }